I said to the other guy "Yeah, he just gets by on dating significantly younger women." GP just shook his head and said "That's cold, baby. That's cold."
Ouch! What prompted you do say something so mean?
I'm not saying that his remark to the other guy wasn't annoying... that kind of thing annoys the heck out of me, too, but to comment on it out loud to a stranger? Blecch.
And no fair saying: 1) "I was just kidding" as though a joke can't hurt, 2) he was fine with it, it didn't bother him, 3) he knows I didn't mean it.
I'm asking why YOU did it, NOT whether it bothered him deeply.